Dewey Color System

Job Tests

The Dewey Color System is now the world's most accurate test. It uses color preference to create scientifically valid evaluations, programs, books and self-awareness seminars. Over 70 million have experienced this personality test which illuminates purpose, joy and relationships to inspire positive change.

For more than 25 years, Dewey Sadka owned and ran Temp Force, one of America's largest and most successful staffing companies. With his intuitive people skills and motivational ability, he created a multi-patented system that is now the world’s most accurate evaluation. With its 80+ correlation, it ranks even higher than the respected Myers Briggs. Without relying on language, the color-based system predicts best occupations and all five global personality factors.